You will be surprised how easy and seamless it all is. Just browse the content if you like.

PieFed has tools that help a ton by bringing together communities from different instances under one roof - like [email protected] and [email protected] and [email protected] (and no this is nowhere close to being a comprehensive listing - there’s also [email protected], [email protected] and [email protected], although I would advise avoiding the latter two for reasons perhaps best not discussed here, and still several more besides), but with some effort you can piece together your own choices as to which communities you want to subscribe to and from then on see in your Subscribed feed. Perhaps even if you don’t want to specifically make an account on PieFed (e.g. if you prefer a particular Lemmy app that doesn’t support it yet), you can still see the collection of communities underneath the single header of simply “Technology” (which also includes others by different names, e.g. [email protected]) and then using the “communities” link on lemmy.ca, subscribe to them with your account there.

Another thought is that you may find it helpful to browse by Local or All to help you discover where new content can come from. Also, people here will share links to communities and webpages dedicated specifically to that purpose.

Welcome to the Fediverse btw!:-)